161038616 has 16 divisors (see below), whose sum is σ = 302749800. Its totient is φ = 80305344.

The previous prime is 161038613. The next prime is 161038651. The reversal of 161038616 is 616830161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161038613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23525 + ... + 29588.

Almost surely, 2^161038616 is an apocalyptic number.

It is an amenable number.

161038616 is a deficient number, since it is larger than the sum of its proper divisors (141711184).

161038616 is a wasteful number, since it uses less digits than its factorization.

161038616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53498 (or 53494 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 161038616 is about 12690.0991327885. The cubic root of 161038616 is about 544.0556730075.

Adding to 161038616 its reverse (616830161), we get a palindrome (777868777).

The spelling of 161038616 in words is "one hundred sixty-one million, thirty-eight thousand, six hundred sixteen".